Gasket cutter



May 11, 1954 E. J. LoMAzzo ET AL GASKET CUTTER 9 Sheets-Sheet l Filed March l, 1949 n INVENTORS. w EJJMzmn T.LUMAZZU BY LLDUJ E.MAUUAT /7 ATTORNEY May 11, 1954 E. J. LoMAzzo Ej- AL GASKET CUTTER 9 Sheets-Sheet 2 Filed March l. 1949 A T TORNEY GASKET CUTTER 9 sheets-sheet 5 Filed March 1, 1949 UT y O U M0 w m fwmf/ W -u. VLM ,N 64.. INJ. R JIT :,llilf 111111 l IUE ,M mw 'T MM ELY/ 3 Il May 11, 1954 E. J. LoMAzzo ET AL 2,678,100

GASKET CUTTER Filed March l. 1949 9 Sneecs--Sheel 4 INVENTORS. EDMUND .J L uMAzzn By LLUYJJ E.MA1;1UAT

' ATTORNEY May l1, 1954 E. J. I oMAzzQ` ET AL 2,678,100

GASKET CUTTER Filed March l, 1949 9 Sneeos--Shee'cl 5 I7 69 83 73 ffy/.ffv W V A TORNEY v May 11, 1954 E..1.| oMAzzo ETAL 2,678,100

` GASKET CUTTER Filed March l, 1949 Sheets-Sheet 6 muy@ i INVENTUM. E'nMuLm .l LUMA z z u By LLUYD EMAUUAT E. J. LOMZZO ET AL GASKET CUTTER 9 Sheets-Sheet 'Y May 11, 1954 Filed March l. 1949 Mafy 11, 1954 E. J. LOMAZZO ETAL GASKET CUTTER 9 Sheets-Sheet 8 Filed March l, 1949 May 1l, 1954 E. J. oMAzzo ETAL 2,678,100

` GASKET` CUTTER Filed March l, 1949 9 Sheets-Sheet 9 Ww /WY/ T TORNEY Patented May 11, 1954 GASKET CUTTER Edmund J. Lomazzo, Norwalk, and Lloyd E.

Maquat, Easton, Conn., assignors, by mesne assignments, to Lico Manufacturing Co., Inc., Bridgeport, Conn., a corporation of Connecticut Application March 1, 1949, Serial No. 79,047

4 Claims. (Cl. 164-69) This invention relates to new and useful improvements in machines and has particular relation to a gasket `cutting machine.

An object of the invention is to provide a gasket cutter including an expansible mandrel, a head for expanding and contracting and rotating the mandrel, a tail stock for supporting the outer end of the mandrel and which tail stock is mounted for movement from a functioning position to a position laterally of the mandrel whereby work may be placed. on and removed from the mandrel over the outer end of the latter without disturbing the mounting of the mandrel on the machine, and means for cutting a sleeve or cylinder of rubber or composition mounted on the mandrel into gaskets.

Another object is to provide in a gasket ont ting machine having an expansible and collapsible mandrel, power means for expanding and collapsing the mandrel.

A further object is to provide an improved con struction of enpansible and collapsible mandrel for use in gasket cutting machines and the like.

A further object is to provide in an expansible and collapsible mandrel adapted to be power actuated to expanded and collapsed condition, adjustable stop means whereby following collapse of the mandrel for removal of work therefrom or the placing of work thereon, the mandrel may be easily and quickly expanded to the former diameter in one operation and without the necessity for measuring or the like.

Other objects and advantages of the invention will become apparent from a consideration of the following detailed description taken in connection with the accompanying drawings wherein a satisfactory embodiment of the invention is shown. However, it is to be understood that the invention is not limited to the details disclosed but includes all such variations and modications as fall within the spirit of the invention and the scope of the appended claims.

In the drawings:

Fig. 1 is a top plan view of the machine of the invention; A

Fig. 2 is a front elevational view of said machine;

Fig. 3 is an end elevational view of the machine, the view `being on a larger scale and taken from the left oi the machine as viewed in Fig. 2;

Fig. 4 is a view on the scale of Fig. 3 and taken as along the line 44 of Fig. 3, the door of the gear and motor housing being omitted;

Fig. 5 is an isometricview showing the shafting"Vv and gearingof the various drives; l

Fig. 6 is a detail View showing a clutching arrangement employed;

Fig. '7 is an end elevational View on the scale of Fig. 3 but taken from the right hand end of Fig. 2;

Fig. 8 is a rear elevational view of the cutter mechanism, the view being taken as suggested by the line 8-8 in Fig. 1;

Fig. 9 is a view partly in section and partly in elevation, the view being taken as looking into the right hand end of Fig. 8;

Fig. l0 is a longitudinal sectional View through the mandrel, the View being on a larger scale and taken as along the line l0-| of Fig. l2, the mandrel being expanded;

Fig. l1 is a similar view but with the mandrel collapsed;

Fig. l2 is an end elevational view looking from the outer end of the mandrel with the latter expanded, the View being taken as along the line l2-I2 of Fig. 10 but on a slightly larger scale;

Fig.l3 is a transverse sectional View taken as along the line l3-I3 of Fig. 10 but on the scale of Fig. 12; and

Fig. 14 is a similar view taken as along the line irl- Ill of Fig. 10 and on the scale of Fig. 13.

Referring in detail to the drawings, at lo is generally indicated the base or frame of the ma chine having at one end a motor and gear housn ing li and formed with or provided at its upper side with a bed l2. Through means within the housing Il and later to be described, a head i3 at one side of the housing il and over the bed i2 is driven and this head supports the inner end of a mandrel mounting spindle i4 (see Figs. 10 and 1l) and at the proper time rotates such spindle.

The outer end of the spindle, when the machine is in use, is supported and centered on a tail stock center IE5 mounted by a tail stock it andat such times the spindle supporting an expansible and collapsible mandrel, generally designated li. This mandrel is adapted to receive and support a piece of work in the form of a relatively heavy cylinder generally of rubber or oi acombination or a laminated structure of rubber land cotton or the like, as in the form of a layer or layers of canvas which has been impregnated and made into a laminated structure through the use ci" rubber and any desired llers.

With the machine of the invention, this cylindrical sleeve or work is to be cut into a series of gaskets of equal thickness and the means for cutting the gaskets is automatically fed and operated as will appear and comprises the mecha- 3 nism mounted at the rear of the machine and substantially in alignment with the spindle and generally designated i8.

The machine is powered by three motors which an electric motor i9 supplies the power for expanding and collapsing and driving or rotating the mandrel li as well as for intermittently feeding the cutter mechanism i8 outwardly longitudinally with respect to the base during the cutting of work into gaskets, while a second and somewhat smaller electric motor 2S provides for a quick return of the cutter mechanism iS following the operation of cutting a sleeve into a plurality of gaskets, and an electric motor 2i' provides the power for rotating a disc cutter forming part of the mechanism ES. The various drives will be understood by reference to Figs. l, 3, 4 and 5.

Built with the motor i9 is a casing f3 containing any adjustable or variable speed drive mechanism adjustable as on rotation of the hand wheel 24, access to which is obtained on opening of the door 25 of the housing il. This door is shown as hinged along one vertical edge as at 26 and may be provided with a handle or hand knob 2,1. The motor and the casing 253 of the variable speed mechanism are shown as mounted on a platform 28 pivoted as at 29 and adapted for vertical adjustment by swinging movem about said pivot and to be locked in adjusmd position through manipulation of the nuts 39 on a screw 3l passing through a portion cf the platform. 'This adjustment is merely to keep driving belts 32 at the proper tension and for use when changing such belts and the latter are shown as passing over a dual pulley 33 on a drive shaft Sd from the casing 23 and also as passing over and serving to drive a dual pulley 35 fast on a short shaft 3S.

Also mounted within the housing il and parallel with the shaft 35 is a second shaft 3l above,

and parallel with which is an overdrive Yshaft 38. A gear 39 fast with the shaft Se meshes with the larger gear di) of a dual gear fastfon the shaft 3l and in addition to the gear t@ including a gear 4l of slightly less diameter. rThis gear il meshes with a gear d2 turnable on a stub shaft $3 and meshing with a gear d4 turn-Y able about the shaft 33 as a center. Also turnable about the shaft 33 is a large diameter gear i5 meshing with a small diameter gear i5 fast on the shaft 3l previously referred to.

Additionally, on the shaft 38 there is fixed a smalldiaineter gear il meshing with a relatively large diameter gear 48 fixed or made rigid with a tubular shaft or sleeve le extending into the driving head I3 and through which motion is transmitted to said driving head. rllhe gears ifi and llt are adapted to be selectively coupled with the shaft 33 byvmeans of a clutch 5@ shiftable by afork fixed to the inner end portion of a bar 52 extending through the front wall of the housing il and at the outer side of such wall having iixed thereto a handle or manual 53 for rocking the shaft and thereby the fork 5! to shift the clutch 563.

In the drawings the clutch 5) and lever 53 are shown with the clutch in a neutral position and neither gear 44 nor gear i5 is coupled with the shaft 38; However, if the clutch is shifted toward the left in Figs. 4 and 5 by moving the manual 53 in a clockwise direction, the gear 4i! driven by the gear 42 will be coupled with the shaft 38 and the latter will be driven and through gears 4l and 48 the cylindrical shaft ,4 lie will be driven whereby (a brake being applied to the head I3 as will be explained) the mandrel Il will be collapsed. On shifting of the clutch element 5D towards the right in Figs. i and 5 by movement of the manual 53 in a counterclockwise direction, the drive is then from the shaft vt'iito the shaft 37 through the gears 39 and e0 and then through gear 45 to gear i5 which is now coupled to the shaft 33 and through that shaft and the gears -l'i and 48 to the sleeve or spindle 49 whereby (a brake being applied to the head i3 as will be explained) the mandrel il is expanded.

For rotating this mandrel during the operation of cutting-gaskets, the drive is practically a straight line drive from the shaft 3% through a clutch 5ft to a shaft 55 concentric with and in Fig. 5 shown as rotatable in a socket in shaft Bt and coupled directly with the cylindrical shaft or spindle 49, which latter may be an enlarged diameter portion of shaft 55. The clutch 54 is shiftable by means of a yoke 5t fast to the inner end portion of a bar 51, the outer end portion of which projects through the forward end of the housing il and has fixed thereto a handle or manual e8. When this manual is shifted to start, clutch 54 is coupled directly coupling a sleeve-like hub Sea of the gear (it, and thus shaft 3S, with the shaft 55 whereby the head i3 is rotated rotating the'mandrel il for a cutting operation of the machine, as will later appear.

When this lever or manual 58 is shifted to the other position, i. e., stop, shaft 55 is no longer coupled with shaft 3B and there is no direct drive to the head i3 except or unless clutch 5! is coupled. Fixed to the shaft $5 which is aligned with the shaft 36 and rotated with the shaft is a gear 53 meshing with a gear t@ on a stub shaft 6i. Such stub shaft also carries a relatively small gear E which meshes with a relatively large gear 63 the center of which is a stub shaft Eli. VOn this same stub shaft d4, but outwardly of a wall 55 of the housing il, is secured a pinion B5 which through a sprocket chain iii' drives a pinion 53 fast on a cam shaft 69.

Fixed to the relatively large diameter gear e3 as by means of screws f is a body il having an arm l2 carrying a roller 53 aligned with a Geneva gear ifi fast on a shaft 'l5 also projecting through the housing wall t5 and at the outer side thereof mounting a gear i5 meshing with a relatively large diameter gear il' xed on a shaft F3 which through a clutch means i9 may be connected to intermittently drive a feed screw the inner portion 3i of which or the portion of which inwardly of a wall Si of housing Ii is unthreaded. Of the clutch "i9, the element et is the shiftable element. It is shiftable by means of a fork 34 fast with a hub iii fixed to a shifter rod 86.

An arm or member 8l (see Fig. 6) is also fixed at its lower end to this shifter rod and the upper or manual 8S fixed to it. Thus, it will be seenV that theclutch 'l may be coupled and uncoupled,

either through operation ofthe hand lever 89v or through a longitudinal movement of the shifter rod 8'6.

The symbols on the front wall of the housing li in Fig. 2 indicate the two positions to which the shifter rod may be moved. When the shifter rod is in feed position the clutch i9V is so coupled that shaft 18 is intermittently driving shaft or feed screw 89. When the hand lever 89 is in the rapid traverse or R. T. position, the clutch 'i9 is disconnected from shaft 18 whereby the latter is not driving the feed screw 89. However, in its rapid traverse position the clutch 19 couples the shaft i8 with a gear 93.

Fixed to the shifter rod 86 is a collar 99 having a pair of recesses in its upper edge and into one or the other of which enters a spring pressed plunger 9| for yieldingly or frictionally holding the rod in either its inner or outer position. In the inner position of rod 86 the clutch i9 is coupled with the gear and in the outer position of the rod the clutch couples the shaft 9| with a gear 93. The rod 86 is adapted to be shifted automatically at the end of the cutting operation to disconnect the clutch element 93 from direct driving relation with the inner end portion of shaft I8 and to clutch gear 93 with screw portion 8|. Now a gear 94 on a rapid traverse or return shaft 95 driving the gear 93 rotates the feed screw 80 continuously and rapidly and in a reverse direction for a purpose to be set forth. This shaft 95 also mounts a pulley 99 driven by belts 9'! from a pulley 99 on the shaft of the rapid traverse or return motor 29 previously referred to.

Through the mechanism above described (see Fig. 6) it will be understood that the shifter rod 86 and the handle or lever 89 are mechanically connected and that either may be used to couple or uncouple the clutch 19 and that any movement imparted to the shifter rod 86 will result in movement of the hand lever 89 and vice versa.

A bearing member 99 mounted by the housing wall 82 supports the outer end of the shaft 39 and also the tubular shaft portion 49 of shaft 55 both previously referred to. Within an opening |99 through the means 99 (see Figs. 10 and ll) there is mounted a sleeve |9| having a laterally extending flange |02 at its outer end and this sleeve toward its outer end mounts bearings 93 for the hollow shaft or spindle 49. A plate |69 assists in maintaining these anti-friction bearings |93 in place and the plate and the sleeve member i9! are shown as secured to the means 99 by bolts |95. l

Shown as integral with the outer end of the hollow spindle 49 is an inner head-like portion |99 at its forward end carrying lugs or keys IllI. Mounted on this head-like portion, but adapted to be held against turning movement therewith, is a drum |99 mounted as on the anti-friction bearings |99. Toward its inner end the spindle llt includes a substantially cylindrical portion Ill! and inwardly of such portion a tapered or cone portion the latter being received in a similarly shaped opening through the inner head |96.

A rod I2 may be connected with the inner end of the spindle and such rod will be provided with suitable means whereby the spindle will be drawn tight into the cone-shaped socket provided in the inner head IDS. A nut ||3 may be threaded tothe head |06 to keep the bearings |99 in place and fixed to the spindle I4 at about the juncture of its portions ||9 and or, in fact, formed integral with the `spindle at this point, is a collar ||4 having sockets or openings therein, in number, equal to the number of the keys |91 fixed to the forward side of the inner head E99 and adapted to receive these keys. With this construction, it will be apparent that 6: as the inner head |06 is rotated the spindle I4 must rotate with it being made fast to it for the purpose of rotation by means of the keys |97 entering openings or sockets in the collar H4.

An externally threaded sleeve l5 is disposed over the cylindrical portion ||U of the spindle I4 and is secured thereto for turning movement therewith, and for sliding movement in the direction of the length thereof, by an elongated key |I6. Threaded onto this sleeve is a nut |Il' having its inner end made fast to the drum |09 as by means of screws or bolts I I8. The mandrel il' is mounted on the spindle I4 and (see Figs. 10 and ll) it is here noted that this mandrel includes an inner sleeve I I9 mounted on lthe spindle It to turn therewith and also for limited movement longitudinally thereof.

At its inner end this sleeve is provided with recesses or sockets to receive keys I2!) on the outer end of the threaded sleeve IIE whereby such sleeve I l5 is made fast to the sleeve I I9 so that these sleeves must rotate together. Additionally, the outer end portion of the threaded sleeve IIS is coupled to the inner end portion of the sleeve ||9 by means of a nut |2| flanged over the outer end portion of the threaded sleeve and shown as threaded over an enlarged diameter inner end portion or shoulder |22 of the sleeve IIS. With the described construction it will be seen that on turning the nut |2| from the enlarged shoulder |22 of the sleeve ||9 there is no connection between the mandrel Il and any portion of the head |3 to prevent movement of the mandrel along` the spindle I4 outwardly from the head. This matter will later be fully con sidered.

In addition to the sleeve ||9, the mandrel El includes an annular plate or disc |23 having a hub portion |29 and integral with such hub portion there is an outwardly extending reduced diameter externally threaded sleeve |29. One or more elongated pins |25 pass through the hub portion |24 and may slide back and forth in this hub portion. Threaded on the sleeve |25 is a stop device in the form of a collar |21 and such collar is adapted to be adjusted along the sleeve and to limit the extent to which the pin or pins |25 may be pushed outwardly through the hub portion |29. A nut |29 is clamped on the outer end portion of the spindle I4 in a position against the outer end of the externally threaded sleeve |25 whereby such sleeve and, as will hereinafter more fully appear, the entire mandrel |'I is held against movement outwardly longitudinally of the spindle I4.

At suitably spaced points, the sleeve ||9 is provided with inner and outer sets of lugs |29 and |39. The number of lugs employed will depend on the number of segments in the mandrel. The lugs of each set are arranged radially about the sleeve H9 and each lug of the inner set is, measured along the length of the sleeve, aligned with or in the same plane with its corresponding lug in the outer set. Measured transversely of the sleeve, the alternate lugs of the inner set and the alternate lugs of the outer set :are slightly offset with respect to one another so that trans versely the alternate lugs of the outer set of lugs are in slightly different planes and the same is true of the lugs of the inner set. The purpose of this will later be further considered but here it is noted that such an arrangement permits of our making an expansible and collapsible manu drel having an exceptionally large number of segments. I i

Sets of inner and outer links I3I and l32, all of the same length, are employed and each link iti at its inner end is secured by means of a pin 53S with a pair of the lugs IZB while each link E32 at its inner end is secured as by a pin I Ell with a pair of the lugs 53B. These .pins pivotally attach the innerv ends of the links to the sleeve iig. A series of bars or segments E35 are provided, each having an arcuate outer surface, all bars or segments having their outer surface on an identical arc. Each bar or segment is also provided with inner and outer sets of lugs 36 and E31 and pins ISB secure the outer ends of the links it! with the lugs |38 while similar pins H39 secure the outer ends of the links ISZ with the lugs lill'. With the described construction it will be seen that through the links ISI and S32 the bars or segments ISE are connected with the sleeve iid but there may be relative movement between the segments or bars and the sleeve l i9 as the links itl and E32 swing on their pivots or on their pivotal connections with the sleeve and the segments or bars.

Toward its outer end each bar or segment It carries a roller Vlill] and these rollers are adapted to travel in radially extending guide slots itt-d in the inner face of the disc 123, Similarly, screws i4! attach to the outer end of each bar or segment 35 a lug i152 and these lugs are radially arranged and each extends inwardly and overlaps the outer face or side of the disc E23. Since the rollers |40 bear against the inner surface of the slots Ilia of the disc I 23 andY the lugs M2 bear against the outer face of said disc and these Vparts are rigid with the respective segments or bars ISS, it will be understood that suchsegments or bars are secured against movements in the directions of their length by the disc 23 but may move radially outwardly and inwardly with respect to said disc. Thus, the mandrel il may be expanded from the collapsed condition of Fig. l1 to the expanded condition oiE'ig.V l0 and from such expanded to such collapsed condition.

A brake band i133 having a suitable friction 1ining ide has 4one end anchored as on a pivot or pin E55 (see Fig. '7) and is carried about the drum its and has itsrother end fixed in a head itt, which through an adjustable threaded rod itl is connected with a link or fork hid pivoted at its en an intermediate portion of the normally horizontal arm it@ of a hand lever ESI. The inner end of the horizontal arm I5@ of the lever I5l is pivoted for turning movement about the pivot Ifll. A coil spring E52 is anchored as at 553 to a wall of the housing Hand at its other end at lei. to the head It. Thus, it will be seen that this spring 52 is constantly drawing upwardly onV said head and through the threaded bar i-ll and fork ifl on the hand lever Ilil whereby the brake band lining is Vheld released from the drum itt. Y

fla pin IE5 acts as a stop for the horizontal arm of the lever itil limiting the extent to which said lever may be shifted by the spring 52. With this arrangement it will be understood that on the i hand grip i523 of the brake lever I5! being drawn outwardly to rock the lever in a counter-clockwise directions the-lining It 'of the brake is drawn against the drum it applying a rictional braking action. Y

Assuming the mandrel toVV be Y,collapsed as in Y1l, a piece oi work comprising a cylinder of rubber or of a laminated structure including rubber, canvas or the like, is slipped onto the the step l2?.

mandrel over its outer end. Then the hand levers 58 and 89 being positioned whereby the clutches 'I9 and 54 are disengaged, the hand lever 53 is rocked upwardly to engage the clutch 5G. Then the gear 39 on the shaft 35 driving the gear 40 and thus the gear il and the shaft 3l acts through the latter to drivey gear te which drives the gear 135 and clutch 5@ being coupled with such gear the latter drives the shaft 38 and consequently the small gear el which through the large gear i8 drives the hollow spindle 49 and thus the inner head it and the spindle I4. At this time the operator is grasping the brake handle ISB and applying the brake to the drum IB is frietionally holding the latter against turning movement with the head IE6 and spindle Ill and threaded sleeve H5. Y

Since the drum Hi8 is held against turning with these parts, the nut l Il secured to said drum by the bolts llt is held against turning and the sleeve Ile being nxed to the spindle portion Iii) by the key lli is threaded outwardly with respect to the nut Ill. As this occurs, said sleeve being connected with the sleeve I I9 of the mandrel, the iattei sleeve is shifted outwardly as from the position of Fig. il to or toward the position of Fig. it. As the sleeve Ii is fed outwardly along the spindle Id, the sets of links ESI and I32 have a thrust applied to them which they transmit to the segments or bars 35.

Because of the engagement'of the rollers hid with the inner surface of the plate or disc IES, the segments or oars cannot move in the direction ci their length and so the thrust applied to them through the links results in their moving outwardly radially with respect to the sleeve I It or direction to increase the effective diameter of the mandrel. The diameter to which the mandrel is 'to be expanded is known and Ydepends on the `work in hand and accordingly the stop I2l has previously been adjusted on the threaded tubular portion IE5. Therefore, as the sleeve lit is fed by the threaded sleeve H5 screwing itself out of the nut lll, the forward end of the sleeve lit strikes the inner1 ends of the pins 22e and these pins may move outwardly until they engage When this occurs, it is merely necessary that theV operator release the brake handle whereupon the nut Hl and drum It will rotate with the other portions of the head and the mandrel and there will be no further attempt to expand the latter.

After work on the mandrel has been out into Ysegments it is then desirable to collapse the man- Y drel whereby to reduce its effective diameter and permit of the work being more readily removed from the mandrel.V In this connection it will be understood that after a piece of work has been placed on the mandrel the latter is expanded to forcefully engage `vnlth the work and to expand the same slightly or at least to put a tension on the work. Generally there is a cushioning cylinder ci rubber or the like about the mandrel and under vthe work whereby as the work is cut the knife is not brought against the metal mandrel.

To collapse 1e mandrel to permit of easier removal of the work the levers 5S and 8S are returned to or kept in neutral position disconnecting the clutches lil and 54. Then the handle or lever 53 is shifted to engage clutch 53 for coupling gear nl with'the shaft-38.V `Now the drive is from the gear Se on shaft 36 to the gear 40 and thus to the gear il on the shaft 3l. Gear il is driving the intermediate or reversing gear 'l2 on the stub 42 meshes with and drives a gear 44 which, as above suggested, has now been clutched to the shaft 38. Thus, the shaft 38 is now driven in a reverse direction and through its gear 41 meshing with the large gearV 43 on the hollow spindle 49, the latter and its inner head |06 are driven in the reverse direction to that previously described. Now the operator grasps the brake handle I e and applies the brake to the drum |08 holding the nut II1 against revolving with the threaded sleeve 5. However, this sleeve continues to revolve or turn with the spindle I4 and the inner head |116 and thus the sleeve I I5 is fed or threaded inwardly into the nut I I1.

Through the coupling nut I2I, sleeve I|5 is connected with sleeve ||9` of the mandrel and thus this latter sleeve will be drawn inwardly moving the inner ends of the sets of links I 3| and I 32 toward the left from the position shown in Fig. and toward the positions in which the links are shown in Fig. 11. Such movement results in a pull being transmitted through the links to the segments or bars |35 but owing to the fact that the lugs |42 are rigid with the forward ends of these bars and such lugs overlap the outer end or side of the plate |23, the bars can have no longitudinal movement. Therefore, the mentioned pull or draw transmitted through the links 63| and I 32 resolves itself into a movement drawing the segments or bars |35 inwardly toward the sleeve IIS reducing the eii'ective diameter of the mandrel. I

At this time, the work or product is removed from the mandrel and a new piece of work mounted on the mandrel and then the latter expanded by the drive rst described above.` In this connection it will be understood that so long as the work is of the Same size the stop |21 is left in position and during the expanding of the man drel the operator does not have to keep measuring the mandrel or the work to see if the proper eX- pansion of the mandrel has been obtained.

When the sleeve |I9 pushes the pins |26 hard against the stop |21 the mandrel is expanded to the desired extent and cannot be further expanded. At this time in order to hold the drum |833 and nut II1 stationary, a very considerable pull on the brake lever is required and the operator knows the proper expansion has been obtained even though he does not look to the position of the pins |26 at the outer end of the mandrel. He therefore merely releases the brake lever knowing that the desired expansion has been obtained.

At its outer end the spindle I4 is centered and supported on the center I5 of the tail stock I6. To prevent wear in the spindle I4 (see Figs. 10 and ll) the latter does not bear directly on the tail stock center I 5 but is bored in its outer end to receive the stem |51 of a bearing head |58 having a tapered socket |59 at its outer end to receive the cone point of the tail stock center I5. Should the socket |59 wear, then the head |58 is replaced by withdrawing its stem from the outer end of the spindle I4 and then mounting a new head on the outer end of said spindle.

Tail stock I5 (see Figs. 1, 2 and 7) includes a housing It@ having an eye or tubular portion slidably received on but keyed to a longitudinally extending rod |62 turnable in a bracket |63 fastened to the outer end of the base Ill. Arranged below the housing IBII is a cradle-like device |54 having ears |55 slidable on the rod |62 and located one at each end of the eye or tubular portion of the housing |60, This cradle-like device, at its undersides, is supported or rests on a pair of bars or rails ISIS and |61 fastened on the bed of the machine and extending longitudinally thereof in parallel relation with one another and with the bar |62.

Toward its forward edge, cradle |54 is provided with an inverted V-like rail IES and :in its forward under portion, the housing I6!) has a corresponding groove to receive this rail when the housing is in normal position. With the described construction it will be understood that on rotation of the bar |52 in a clockwise direction the housing |63 will be rocked as from the fullto the dotted line position of Fig. 7 while the cradle |64 will remain in place. Further, it will be clear that the entire tail stock comprising the housing 15d and cradle |64 may be shifted longitudinally of the base along the upper side of the bed, all such movement being in the direction of the length of the rod |62.

The tail stock center is projected and retracted by pneumatic or hydraulic means and to the desired end a cylinder |69 is mounted on the outer end of the housing I 5G and has its piston |19 suitably connected as by a piston rod |1| with the tail stock center or a holder |1IIcL for the latter. From -a suitable source, compressed air is supplied to a distributing member |12 and through a flexible hose or tubing |13 from said member to a valve |14 mounted on the housmg ltd. This valve, on proper manipulation of a hand lever |15, controls the distribution of said compressed air through tubes |16 and |11 to the inner or outer ends of the cylinder |169 whereby to retract or project the tail stock center I5, and to connect either end of the cylinder with an exhaust port |18. A hand valve |19 is connected in the line |13 whereby the latter may be closed oi from the valve |14.

is a hand lever of a suitable locking device for manually or mechanically locking the tail stock center I5 in projected position. A handle or knob I8I controls a bolt |32 for mechanically locking the forward portion of the housing |60 to the cradle |64. At |83 is shown a slide having a notch |84 into which extends the shank of the lever |15 whereby as this lever is drawn to a position to supply air to the outer end of the cylinder |69, this causes projection of the tail stock center I5 (the parts are shown in this position in Figs. 1 and 2). Said slide |83 is moved to a position over the knob IBI and thus the bolt |82 may not be casually released from locking position. The outer side of the handle or knob IBI is covered and the bolt |82 may not be thoughtlessly withdrawn from locking engagement with the housing |60.

`On the valve lever I 15 being thrown in the opposite direction to supply air to the inner end of the cylinder |69 and retract the tail stock center I5, the slide |83 is shifted in the opposite direction exposing knob I8I whereby the same may be used to withdraw the bolt |82 from locking engagement with the housing ID to the end that the latter, as will hereinafter more fully appear, may be swung about the rod |52 as an axis to carry the housing |50 to a position laterally of the outer end of the mandrel When work is to be placed on this mandrel or when the product is to be removed from the mandrel it is planned that the work shall be placed on the mandrel over its outer end and the product removed from the mandrel over the same end. As the work is generally a rather long sleeve, it is planned to swing the entire tail stock 1l housing |52 and the parts mounted thereon laterally with respect to the outer end of the mandrel as from the full to the dotted line position oi Fig. 7.

As this housing and the associated parts are relatively heavy, power means are provided for swinging it to and from this lateral position. Such power means includes a cylinder and piston construction |25, the piston rod its or which is secured at its outer end by a pivot it? with the outer end of an arm E32 keyed or otherwise made fast to its inner end with the shaft or rod 22. Air from the distributor' is to be selectively supplied to the inner and outer ends oi the cylinder i 5 as through tubing it@ and lili?.

This distribution or" air is controlled by a valve i2! shown as mounted on the chest V52 and having a manual or handle E92. On shifting of this valve to one position (assuming the parts to be in the full line position of Fig. 7) air may be supplied through the tube i3@ to the inner end of the cylinder E25 forcing the piston downwardly in the cylinder and retracting piston rod i3d thereby rocking the arm ist in a clockwise direction. Y

Since this arm is fastened to the rod the tail stock housing itil is likewise fastened to such rod, the tail stock housing i t@ will be rocked icc from the ull to the dotted line position of 7. Now, the mandrel having been collapsed, the product is removed from the mandrel and a new piece of work applied over its outer end. Then the valve lei is operated to its opposite position and air exhausted from the upper end of the cylinder |85 and supplied to the lower end thereof through the tube |953V again forcing the piston rod |32 outwardly oi the cylinder to the full position of Fig. '7. This will rock the 88 and consequently the rod |62 and the tail stoel; L

housing back to what may be considered the normal positions of these parts with the tail stock housing aligning the tailstock center i5 with the outer end of the mandrel spindle irl.

It is not necessary to maintain pressure in the f cylinder i35- to retain the parts in this position since, obviously, the weight of the housing itil and parts mounted thereon tends to keep it in this position and it is locked by the bolt 82.

A counterbalancing spring E53 may be provided l.

for assisting in the movements of the housing |69. This spring is shown as anchored to :le pin i8? and to a pin |94 on the outer end of an arm E25 of a bracket E9e secured to the end of the machine base lil.

The rear wall |97 of the base IU (see Figs. 8 and 9) is provided with a pair of upper and lower horizontal rails |98 and |25 received in the undercut or dovetail ways 22? in the forward. side ofV a saddle, generally designated whereby the saddle is mounted on the base l@ for movement longitudinally thereof, the saddle being supported by and slidable on said rails E23 and ISS. A sheet metal dust or chip guard 202 is shown as mounted on the base and extending into the saddle over the upper rail |538.

On its upper side, saddle 20| is` provided with a pair of rails 203 received in a way 221i in the underside of a slide 225. These rails and the way extend transversely with respect to the base Iii and the slide 2435 is adjustable inwardly and outwardly on the rails on manipulation of a handle 205 iiXed to a screw 2i?? threaded through a nut 238 rigid with the slide 225. Thus, on manipulation of the handle 206, the slide and a vI2 means mounted thereon are adjustable toward and from the mandrel The motor 2| is secured against the upper side of the slide 205 and this motor, Vthrough a pulley 259 and belts 2li), drives a dual pulley 2li fast on a shaft 2|2 mounted in the arms of bracket 2| 3 attached to the upper side of the bed 2cd. A gear 2N21 on the shaft 2|2 meshes with and drives a gear 2 I5 fast to one end portion of a shaft 2|5 and on the other end portion of which is mounted the disc cutter 22. journalled in a bracket 2 'i mounted on the shaft 2i2 for turning movement about the same. It will be understood that on any such turning movement, the gear 2|5 will simply be rolled. about the gear 2M and that such gears will remain in mesh whereby the disc cutter 22 may be rotated from the motor 2l in any position to which the bracket 2H may be rocked on the shaft 2|2.

Housings 2|8 and 2|9 are shown enclosing the belts 2||i and the pulleys driving such belt as well as the pulleys driven by the belt. Also these housings enclose the gears 2M and 2|5. The housing 2|@ is rockable with the bracket 2 il'. A guard 220 partly encloses the cutter disc` 22 but does not entirely encircle the disc, leaving the inner portion of the latter exposed for cutting operations. An extension 22| of the bracket 2|? is provided with an arcuate slot 222 through which passes a bolt 223 securing the upper end of a curved rod 224 to the bracket. Obviously, the slot 222 and the bolt 223 provide an adjustable connection for securing the upper end of the rod 224 to the bracket 2|?.

The carrier or saddle 22| is provided as shown on its opposite ends with nuts 225 fast to the saddle or held against turning movement relative thereto and the feed screw 8i] is threaded through these nuts whereby on turning of the screw in one direction or the other, the entire cutter mechanism including the saddle 29| will be fed longitudinally of the bed ill either outwardly or inwardly, depending on the direction in which the screw is turned. The shifter rod 35 also passes through the carriage or saddle 20| but there is a clearance between these parts to permit of the saddle moving without imparting movement to the shifter rod. However, a pair of adjustable stops 226 and 227 are mounted on the shifter rod at the outer and inner sides of the saddle 20| to be engaged by the latter at the end of a movement in either direction bringing about shifting of the clutch 'iii and discontinuf ance of a feed of the saddle, all as will later fully appear.

In addition, the cam shaft E59 passes through the saddle 22| and keyed to this shaft for turning movement therewith but adapted to be slid along the shaft with the saddle 22| is a cam 228. Slidable on the cam shaft 59 with the cam is a bracket device 229 pivotally mounted on the side of the saddle 22| as on a pivot 23. Bracket device 222 has a slot 23| therein in which is Vmounted a cross head 232 attached to the lower end of the rod 224 by means of a bolt or the like 233.

Threaded into the cross head 232 is a screw 236i which on turning is adapted to feed the cross head longitudinally in the slot 23E to change the relationship between the lower end of the rod 221i and the pivot 239. Screw 234 is adapted to be turned by the application ofV a wrench or other tool to its squared outer end 235. Further, xed to the bracket 229 at a side thereof oppo- Shaft 2 5 isV 13 site that against which the lower end of rod 224 is attached, is a roller 23 positioned in alignment with the cam 222 and adapted to be engaged by said cam as the latter is rotated whereby the bracket 229 will be rocked in a counterclockwise direction about the pivot 232.

A relatively heavy coil spring 231 is anchored at its upper end to the saddle 28| and at its lower end to the outer end of an arm 238 Xed to the bracket 229 whereby on movement of said arm by the spring the bracket 229 may be moved in a Counterclockwise direction. For a purpose to be described, an arm 239 projects upwardly from and it receives a part of the bracket 229 and on its upper end arm 239 is notched to provide a shoulder 24|) beyond which projects a tooth-like portion having a fiat or straight across outer end 24|.

Mounted on the feed screw 8|! is a nut-like device 242 formed in two parts and held together by screws 243 which are preferably spring loaded whereby the parts of the device 242 are resiliently drawn against opposite sides of the feed screw 82. A projection 224 from the device 242 has a screw 245 adjustable therethrough and such projection extends over the upper side of a stop pin 24B carried Hoy a bracket-like part 24T fastened to the near side of the saddle 22|. Also, the nut-like device 242 at a place or point below the stop pin 246 is provided with a spring pressed pawl or tooth 248 normally held in the position shown by its spring but pivoted at 249 for movement in opposition to the spring.

The function of the present machine is to cut into gaskets of the desired width or thickness a cylinder or sleeve which has been placed on the mandrel |1. During a cutting operation, the feed screw 80 is intermittently operated through the Geneva gear 14 and parts driven therefrom to feed the saddle or carriage 29| outwardly along the ways |98 and |99. During each pause between operations the low portion of the cam 228 comes opposite the roller 236 and the spring 231, acting through the bracket 229 and the curved rod 224, rocks the bracket 2|'| in a direction to carry the cutter 22 in against the work.

Then, in the proper timed relation, the cam picks up the roller 236 and rocks the bracket 229 back pulling downwardly on the rod 224 and returning the cutter or moving the cutter back from the work against opposition of the spring 231. During each intermittent feed of the screw Sii in a counterclockwise direction, the nut device 242 being frictionally held against the screw is given a partial turn or a turn in a counterclockwise direction and the extent of this Inovement of the nut device is limited by engagement of the arm 244 thereof with the stop pin 246.

However, this movement does carry the pawl or dog 243 beyond the reach of the shoulder 249 of the extension or arm 239 of bracket 229 so that when said bracket is rocked by the cam, the outer end of the pawl or dog 248 does not engage on the shoulder 240. Then during the above described return movement of the bracket 229 by the cam 228, the upper end 24| of the bracket arm 239 engages the lower end of the screw 245 (the latter having been properly adjusted) and rocks the nut-like device 242 back to its original position.

However, following the last intermittent movement of the screw shaft when the nut-like device 242 has been returned to its, what may be termed, normal position on the operation of the cam to move the cutting disc 22 back from the work, the bracket 229 will be swung on the pivot 230 but the nut-like device will not have been moved since there will have been no intermittent movement of the feed screw. Therefore, the shoulder 240 of the arm 239 and the toothlike projection of the arm beyond said shoulder will engage with the dog or pawl 248 with the fiat outer end of the latter bearing against the shoulder 240. Thus bracket 229 will be locked in this rocked position lagainst the tendency of the spring 23'! and therefore the cutting disc 22 will be secured in a locked out position for return movement of the saddle 20| and parts carried thereby.

That is, during outward movement, the saddle and parts thereon 'are intermittently fed and the cutter disc is intermittently carried against the work cutting it into widths depending on the increments of feed employed. At the end of this movement, the saddle strikes the adjustable stop 226 and the shifter rod 64 is moved shifting the clutch 79 discontinuing the outward feed of the cutter mechanism I8. During this intermittent outward feed, the cutter disc 22 has been brought against the work `at each pause in the feed. However, during return movement of the cutter mechanism or movement of such mechanism inwardly toward the housing Il", the nutlike device 242 will function as a lockout mechanism with the bracket 229 locking the cutting disc in retracted position so as to avoid chopping up the work. In connection with this opel'- ation, it is to be understood that the spring 237 is constantly biasing the cutting disc 22 towards cutting relation with work on the mandrel Il and that the function of the cam 228 is to rock said cutting disc back from any such work.

While it is believed that the operation of the machine will be understood from the foregoing description, it is thought that a rsum of the operation may be helpful. For the purpose of the following description it will be assumed that the machine is entirely shut down and that the mandrel is in collapsed condition and that the tail stock center l5 is in retracted position.

Now, the operator manipulates the handle 992 to supply fluid under pressure to the upper end of the cylinder whereby the bolt |82 having been withdrawn the entire tail stock i6 is rocked back to the broken line position of Fig. 7. This exposes the outer end of the mandrel and a piece of work, acylinder or sleeve, is slipped over the mandrel from its outer end and is properly positioned longitudinally of the mandrel. Next, by manipulation of the valve handle 392, air is caused to be supplied to the lower end of the cylinder and the entire tail stock I9 is brought back to the position of Figs. l and 2. It is locked in this position by the bolt |82.

Then the valve handle |15 is operated to operate the valve |74 and supply air through the tube |'l' to the outer end of the cylinder 39 projecting the tail stock center I5. Handle |89 is operated to look the tail stock center in projected position. Next the Various motors I9, 20 and 2i may be started but it will be understood that the various clutches are inv neutral positions. However, the shaft 36 is being driven from the motor I9. Now the operator shifts the handle 53 to expand position shifting the clutch 59 to couple the gear 45 with the shaft 33 whereby such shaft, through gears 4'! and 48, drives the tubular shaft 49.

The operator applies the brake through a pull on the handle |56 expanding the mandrel as above described. In this connection it is considered that the stop I Z'I has been adjusted whereby expansion of the mandrel willbe stopped when the pins i2@ have been forced against said stop by the mandrel sleeve IIS. Proper expansion of the mandrel to properly support the work having been accomplished, lever 53 is moved to a neutral position placing the clutch 5b in such a position.

Then the operator moves the lever 5S to start position coupling the clutch 54 whereby there is the rather straight drive to the hollow spindle ifi and accordingly to the mandrel, all as previously described in detail. At this time the operator shifts the handle S9 to feed position coupling the clutch 'I9 whereby the feed screw Si? is driven intermittently through the Geneva gear it and the gearing previously described. mso, it will be clear that since the Geneva is being driven the gear 63 is turning and through the chain t? and the sprockets 66 and et, the cam shaft 59 is rotated. Therefore, as the cutter mechanism i8 is intermittently moved longitudinally of the machine, it is between such intermittent movements that the bracket 2H is rocked on the shaft if as an axis carrying the cutter disc 22 against the work under the innuence of the spring 237 and carrying such cutter disc back from the work under the influence of the cam 228.

At the end of outward movement of the cutter mechanism I3, as determined by the setting of the outer stopV 226 on the shifter rod St, the saddle tti comes against such stop and shifts such rod outwardly shifting the clutch. This locks gear 93 to the'screw shaft and such gear, meshing with the gear 918 on the rapid traverse or return feed shaft 95 driven from the motor 2e, feed screw Se is rotated continuously and in the opposite direction and the cutter mechanism is fed back to starting position or until it engages the stop lug 22? on the shifter rod whereupon the clutch 'is is again shifted.

Then the mandrel will be collapsed by shifting the clutch 5@ to clutch gear lift to the shaft 3&5, all as above described. The tail stock will be operated to its lateral position and the product removed from the mandrel and a new piece of work disposed thereon. The operation of the cutting of a different or new piece of work will be that previously described.

Attention is direction to the fact that for production work the mandrel I'i is not changed and is not dismounted from the machine or from its driving relation with the machine. is removed from the mandrel and new work is mounted on the mandrel without, in any way, disturbing the connection of the mandrel to the driving head of the machine. The mandrel beexpansible as described, it will take care of work within various limits and for larger work or smaller work, i. e., work outside of said limits, a change of mandrel is necessary.

To accomplish this, the sleeve Ii is threaded out of the nut I I'I sufficient to permit the coupling nut i 2i to be threaded off the shoulder 22 of the mandrel sleeve l I 9. Then the locking device its being removed from the spindle It, the entire mandrel is withdrawn over the end of the spindle and a new mandrel of the proper capacity mounted thereon. This mandrel is coupled merely by having the notches in the inner face of its shoulder I22 receive the keys 212i) on the outer end of the sleeve I I5 and then tightening up the coupling nut I2I and placing the stop I28 back on the rihe product end 'portion of the spindle I4 and against the outer end of the externally threaded tubular part E25 integral with the hub iZ of the disc For the accommodations of different sizes of mandrels, the tail stock IE5 is adjustable along the shaft or rod H52 to which the housing i-ii of such tail stock is keyed as previously explained. Also, it will be understood that the inner and outer limiting devices or stops 226 and 22? are adjusted on the shifter rod to positions determined by the work in hand and the length of mandrel einployed.

Having thus set forth the nature of our inven- Y tion, what we claim is:

l. In a machine of the class described, wherein a rotatable head carries a spind e for rotation therewith, which spindle in turn carries a work gripping means and actuating means forl actuating said work gripping means into and out ofrwork gripping relation through the longitudinal movement of said actuating means in one or the other directions relatively to said spindle, the improve" ment comprising power transmitting means for rotating said head and spindle including a driven shaft, a clutch operable to connect said driven with said head to drive the latter and thus said spindle at an operating speed, forward reduction drive gearing between said driven shaft and. said head for driving said head and spindle in forward direction at a lesser speed, reverse reduction drive gearing between said driven shaft and said head for driving said head and spindle in reverse direction at a lesser speed, and clutch means selectively operable to respectively connect said forward and reverse reduction drive gearing for driving said head and spindle in either forward or reverse directions at a lesser speed, and i manually operable for causing the rotation of said head and spindle at said lesser speed to effect lon gitudinal movement of said actuating means one or the other directions depending on the selected direction of rotation of said head and spindle at said lesser speed.

2. In a machine of the class described, wherein a rotatable head carries a spindle for rotation therewith, which spindle in turn carries a work gripping means and actuating means for actuating said work gripping means into and out of work gripping relation through the longitudinal movement of said actuating means in one or the other directions relatively to said spindle, the improvement comprising a driven shaft, a clutch operable to connect said shaft with said head to drive the latter and thus said spindle at an operating a second shaft parallel with said first shaft, meshing gears respectively on said second shaft and said head, a jack shaft parallel with. said first and second shafts, meshing gears respectively on said jack shaft and said first shaft, a reversing shaft, meshing gears respectively on said reversing shaft and said jack shaft, a clutch selectively operable to clutch said gear on said second shaft meshing with said gear on said jack shaft to said second shaft to drive said head in one direction at a lesser speed and to clutch said gear on said second shaft meshing with said gear on said reversing shaft to said second shaft to drive said head in the opp@H site direction at said lesser speed, and means manually operable for causing the rotation of said head and spindle at said lesser speed to effect longitudinal actuating movement of said actuating means in one or the other directions depending on the direction of rotation of said head and spindle at said lesser speed.

3. In a machine of the class described, wherein 17 a rotatable head carries a spindle for rotation therewith, which spindle in turn carries a work gripping means and actuating means for actuating said work gripping means into and out of Work gripping relation through the longitudinal movement of said actuating means in one or the other directions :relatively to said spindle, the improvement comprising a threaded sleeve keyed to said spindle for rotation with said spindle and for longitudinal movement thereon, means coupling said actuating means to said threaded sleeve for rotationaland longitudinal movement therewith, a nut threaded on said threaded sleeve, a drum mounted on said head for turning movement therewith and adapted to be held stationary relative thereto, means iixing said nut to said drum for turning movement therewith, means selectively operable for driving said head and thus said spindle, drum, nut and threaded sleeve as a unit at an operating speed, and other means selectively operable for driving said parts in either forward or reverse directions at a lesser speed, brake means manually operable for applying a load to said drum whereby to hold the same stationary about said head and to hold said nut stationary when said head, spindle and threaded sleeve are being rotated at a lesser speed whereby to feed the threaded sleeve and said actuating means longitudinally in one or the other directions depending on the selecteddirection of rotation of said head 30 and spindle at said lesser speed.

4. In a machine of the class described, wherein a rotatable head carries a spindle for rotation therewith, which spindle in turn carries a work gripping means and actuating means for actuating said work gripping means into and out of work gripping relation through the longitudinal movement of said actuating means in one or the other directions relatively to said spindle, the improvement comprising power transmitting means for rotating said head and spindle including a driven shaft, a clutch operable to connect 18 said driven shaft with said head to drive the latter and thus said spindle at an operating speed, forward reduction drive gearing between said driven shaft and said head for driving said head and spindle in forward direction at a lesser speed,

reverse reduction drive gearing between said driven shaft and said head for driving said head and spindle in reverse direction at a lesser speed, and clutch means selectively operable to respectively connect said forward and reverse reduction drive gearing for driving said head andl spindle in either forward or reverse directions at a lesser speed, and means manually operable for causing the rotation or said head and spindle at said lesser speed to eiect longitudinal movement of said actuating means in one or the other directions depending on the selected direction of rotation of said head and spindle at said lesser speed, stop means adjustable longitudinally on said spindle 0 and disposed in the longitudinal path of movement oi said actuating means in its movement to actuate said work gripping means into work gripping relation to limit said movement to a point predetermined by the position of adjustment of said stop means.

References Cited in the ille of this patent UNITED STATES PATENTS Number Name Date 995,868 Housam June 20, 1911 1,086,606 Merritt et a1 Feb. 10, 1914 1,448,528 Elliott Mar. 13, 1923 1,647,358 Hubbard Nov. 1, 192'? 1,685,127 Hammond Sept. 25, 1928 1,925,498 Plante Sept. 5, 1933 1,944,255 McFall Jan. 23, 1934 2,1222 4 Gora June 28, 1938 2,392,186 Pierle Jan. 1, 1946 2,493,475 Casella J an. 3, 1950 2,521,003 Gitter Sept. 5, 1950 

